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关于矿工在不同照明水平下心理状态变化的研究

Yi Chai1,2, Yungang Wang1,3,4, Feiyan Zhang1,3,4

  • 1School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000, Henan, China.

Heliyon
|August 22, 2024
PubMed
概括

煤矿的照明不良会增加事故发生率. 最佳照明 (200-300卢克斯) 提高了矿工的认知性能和反应时间,降低了事故风险. 这项研究强调了受控照明环境对安全的重要性.

关键词:
人体工程学就是人体工程学.亮度水平 亮度水平心理信号的指标职业安全 职业安全 职业安全

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Testing a Claim about Mean: Known Population SD01:11

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A complete procedure of testing the hypothesis about a population mean is explained here.
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
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